PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/30-17:12:20
G02     36.1           52.4                9.8 +/-    0.62      12.1 +/-    0.62  0.040 / 0.040
G05     127.7          67.0               12.8 +/-    0.32      13.7 +/-    0.32  0.030 / 0.050
G12     191.7          60.5               12.4 +/-    0.86      14.0 +/-    0.86  0.040 / 0.050
G25     286.6          56.3               11.2 +/-    0.78      13.1 +/-    0.78  0.040 / 0.060
G29     311.8          32.9               10.9 +/-    1.02      18.1 +/-    1.02  0.030 / 0.040